Answer:
Answer:
Kc = 0.20
Explanation:
N₂O₄ ⇄ 2NO₂
moles 5.3mol 2.3mol
Vol 5L 5L
Molarity 5.3/5M 2.3/5M
= 1.06M = 0.46M
Kc = [NO₂]²/[N₂O₄] = (0.46)²/(1.06) = 0.1996 ≅ 0.20
Note:
All credit goes to drpelezo (Ace) who created and explained the answer.
Have a nice day, and I hope this helps
-kiniwih426
Any change in average weather conditions on Earth that lasts for at least several decades is called
Answer:climate change
Explanation:
Need help with some chem equations
1. While diving under 3.7 atm of pressure, a gas bubble of 25 mL was found when release at surface at 1 at how big did the bubble get
2. a blue 3 L balloon at 25c was moved to a temperature of 38c what is new volume
3. 1.72 L of gas at STP was transferred to a new container with temps 18c and volume of 3.1 L what is new pressure
Answer:
1. 92.5 ml
2. 3.13 L
3. 524.48 K
Explanation:
1. Using Boyle's law equation:
P1V1 = P2V2
Where;
P1 = initial pressure (atm)
V1 = initial volume (ml)
V2 = final volume (ml)
P2 = final pressure (atm)
Based on the information in question 1: P1 = 3.7atm, P2 = 1atm, V1 = 25 mL, V2 = ?
3.7 × 25 = 1 × V2
92.5 = V2
V2 = 92.5ml
2. Using Charles law equation as follows:
V1/T1 = V2/T2
Where;
V1 = initial volume (L)
V2 = final volume (L)
T1 = initial temperature (K)
T2 = final temperature (K)
Based on the information provided: V1 = 3L, V2 = ?, T1 = 25°C = 25 +273 = 298K, T2 = 38°C = 38 + 273 = 311K
3/298 = V2/311
Cross multiply
298 × V2 = 3 × 311
298V2 = 933
V2 = 933 ÷ 298
V2 = 3.13L
3. Using Charles law equation as follows:
V1/T1 = V2/T2
Where;
V1 = initial volume (L)
V2 = final volume (L)
T1 = initial temperature (K)
T2 = final temperature (K)
Based on the information provided; V1 = 1.72 L, T1 = 18°C = 18 + 273 = 291K, T2 = ?, V2 = 3.1L
1.72/291 = 3.1/T2
Cross multiply
1.72 × T2 = 291 × 3.1
1.72T2 = 902.1
T2 = 902.1 ÷ 1.72
T2 = 524.48K
is how much a material opposes electric current.
*
insulator
conductor
resistance
short circuit
Answer:
Resistance
Explanation:
Resistance is the measure of the opposition of current in a circuit.
Which of the following examples best represents heat?
1. A sample of platinum is 76°C.
2. A piece of plastic contains 57 J of energy.
3. A piece of wood burns at 350°C.
4. A toy car generates 45 J of kinetic energy.
Answer:
What I think it is it's.. 3?
que tipo de fermentacion es al mezclar el agua tibia con levadura
Answer:
kapsüsnwsibd bqvw j dkpövahfbjbjwv8kfb
Please help me I will give brainliest to the first correct answer
Answer:
OPTIC B) HEPT-HOPE IT IS HELPFUL
The chemical equation for zinc in hydrochloric acid is: Zn + HCI = ZnCl2 + H2
Does the above equation demonstrate the law of conservation of mass as it is currently written? Explain why or why not.
Answer: No it does not
Explanation:
The law of conservation of mass states that mass is neither created nor destroyed and in this equation you start with 1 molecule of Cl and 1 of H, but on the reactants side you end up with 2 of each. To make it follow the law of conservation of mass you would have to balance the equation
how many moles are in 0.14g of Nitrogen, N2?
Answer:
0.01 moles
Explanation:
14 g contains 1 mole
0.14g contains> (0.14*1)/14
= 0.01 moles
En un recipiente se colocan 250 ml de agua, clavos de hierro, aceite y una pequeña cantidad de sal común. Indique:tipo de sistema
b. cantidad de fases
c. cantidad de componentes
Answer:
Los sólidos tienen una forma y un volumen definidos. Los líquidos tienen ... Para describir las fases sólida, líquida y gaseosa. El agua puede tomar muchas formas. ... Un líquido familiar es el mercurio metálico.
The concentration of carbon-14 in a piece of wood from an ancient burial mound indicates that two half-lives of this radioisotope have passed. If the half-life (t 1/2) for carbon-14 is 5730 years, approximately how many years ago did this sample of wood die?
If the half-life for carbon-14 is 5730 years, then it will take 11,460 years to complete die of this sample.
What is half life period?Half life period is a time of decay in which concentration of reactant is left half of its initial concentration, means half of the reactant will convert into product.
Total time of decay will be calculated as:
T = (t)ⁿ, where
t = half life time = 5730 years
n = number of half lives = 2 (given)
On putting values, we get
T = (5730)² = 11,460 years
Hence required time for decay is 11,460 years.
To know more about half life time, visit the below link:
https://brainly.com/question/2320811
Answer:
The first part is 5 and the second part is 28,650
Three different rocks that each weigh 50 grams are put out in the sunlight. After two hours, they are all at the same temperature. Pick the true statement.
Answer:
All rocks have same thermal conductivity.
Explanation:
Rocks are heated with the sunlight exposure. Different types of rocks have different thermal conductivity. The heat energy of the rocks is measure in Joules. The size and thermal conductivity of the rocks is important property which determines their heating capacity.
the tissue which continually forms new cells in plants
Answer:
Meristematic Tissues. Tissues where cells are constantly dividing are called meristems or meristematic tissues. These regions produce new cells.
Explanation:
thank me later
why are vials made from vapor glass stronger then typical vials?
I.they contain aluminum instead of boron.
II. They submerged in hot salt bath.
III. They formed out of long glass tubes.
A) I
B) I and II
C) I and III
D) I, II, and III
Answer:
2
Explanation:
I'm not that sure plz tell me if this is right
Examine the food chain below: In this specific food chain, the _______ eats plants for food. A. caterpillar B. sunshine C. bobcat D. leaf
when chlorine gas is passed through potassium Bromide solution Potassium Chloride and bromine are formed which is a more reactive non metal bromine or chlorine
[tex] \boxed{\boxed{\huge{ \mathbf{ \underline{ Answer} \: \: ✓ }}}}[/tex]
In a displacement reaction, more reactive element displaces less reactive element from its compound and from the above reaction we observed that, Chlorine displaces bromine from its compound (KBr) to form Potassium chloride (KCl), therefore Chlorine is more reactive non - metal.
The equation for above reaction is :
[tex] \large\boxed {\mathrm{2KBr + Cl_2 \rightarrow 2KCl + Br_2}}[/tex]
_____________________________
[tex]\mathrm{ ☠ \: TeeNForeveR \:☠ }[/tex]
Pls answer this Il give brainiest question in picture ty
Answer:
c
Explanation:
troposphere is the answer
Select all examples that apply as a physical changes in properties (please help)
High levels and long periods of stress can increase a person’s risk for many diseases.
True
False
Answer:
true
Explanation:
What does the electrostatic force do inside the nucleus?
A. It adds to the strong nuclear force.
B. It holds the protons and neutrons together. C. It causes the protons to repel each other.
D. It cancels out the strong nuclear force
Answer:
C. it causes the protons to repel each other.
Which of the following is NOT a good way to manage stress?
eat a healthful diet.
get enough sleep.
get plenty of exercise.
spend most of the time alone.
2. Which systems receive a benefit from the nervous system?
Digestive
Respiratory
Skeletal
Muscular
Cardiovascular (circulatory)
Answer:
spending most of the time aloneSkeletonIt takes 32.35 mL of a 0.0895 M hydrochloric acid solution to reach the equivalence point in the reaction with 25.00 mL of barium hydroxide. 2HCl(aq) Ba(OH)2(aq) 2H2O(l) BaCl2(aq) What is the molar concentration of the barium hydroxide solution
Answer:
[tex]M_{base}=0.0579M[/tex]
Explanation:
Hello there!
In this case, according to the given information in the undergoing chemical reaction, it is possible for us to realize that barium hydroxide reacts with hydrochloric acid in a 1:2 mole ratio, which means that at the equivalence point, we have:
[tex]2n_{base}=n_{acid}[/tex]
That can be written in terms of molarity and volume:
[tex]2M_{base}V_{base}=M_{acid}V_{acid}[/tex]
Thus, we solve for the molarity of the barium hydroxide to obtain:
[tex]M_{base}=\frac{M_{acid}V_{acid}}{2V_{base}} \\\\M_{base}=\frac{0.0895M*32.35 mL}{2*25.00mL}\\\\M_{base}=0.0579M[/tex]
Regards!
What is the molar it's of a solution that has 0.080 moles of calcium chloride dissolved in 850mL of solution.
Answer:
The molarity of the solution is 0.094 [tex]\frac{moles}{liter}[/tex]
Explanation:
Molarity is a measure of the concentration of that substance and is defined as the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:
[tex]Molarity=\frac{number of moles of solute}{volume}[/tex]
Molarity is expressed in units[tex]\frac{moles}{liter}[/tex].
In this case:
number of moles of solute: 0.080 molesvolume= 850 mL= 0.850 LReplacing:
[tex]Molarity=\frac{0.080 moles}{0.850 L}[/tex]
Solving:
Molarity= 0.094 [tex]\frac{moles}{liter}[/tex]
The molarity of the solution is 0.094 [tex]\frac{moles}{liter}[/tex]
1. Which of the following factors does not affect the voltage produced in a voltaic cell?
A. concentrations of lons
B. pressure
C. metal of the electrodes
The voltage is the potential difference between the two ends of the conductor. The factor that does not affect the voltage produced in a voltaic cell is pressure. The correct option is B.
What is a Voltaic cell?A voltaic cell uses a chemical reaction to convert electrochemical energy to electrical energy. It consists of cathode and ions which flow through the cathode and anode.
The pressure has nothing to do with the Electrochemical devices.
The factor does not influence the voltage produced in a voltaic cell is pressure. The correct option is B.
Learn more about Voltaic cell.
https://brainly.com/question/1370699
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How can I solve this?
Explanation:
option d
hope helps u
have a nice day
Can someone please help
Answer:the third one
Explanation:
Which of the following are base formulas? (Choose 2)
CH3OH
NH3
CH4
NaOH
HNO3
H2SO4
Answer:
Na0H
Ca(OH)2
NH40H
Are the answers
Help needed ASAP, I will mark your answer as brainliest.
Which statement compares the relative strength of the electric forces that hold particles together
A. The force between two nonpolar molecules are stronger than the force between positive ions and freely moving electrons
B. The force between two polar molecules are stronger than the force between positive ions and freely moving electrons
C. The force between positive and negative ions is weaker than the force between two polar molecules
D. The force between two nonpolar molecules is weaker than the force between positive ions and freely moving electrons
A.the force between two non polar molecules are stronger than the force between positive ions and freely moving electrons
How many questions would you need to separate ten arthropods into different branches
Answer:
10.
Explanation:
We need 10 question to separate ten arthropods into different branches because each arthropod belongs to separate branch and each branch needs explanation. Phylum Arthropoda is considered as the largest phylum in the animal world, and insects form the largest class within this phylum due to its highest number of individual or organisms. Each arthropods are different from one another so they needs more questions to separate them from each other.
Is this an alpha or beta decay?